Sand-trap.



PATENTBD JULY 23, 1907.

0. E. WARNER.

SAND TRAP. uruonrou rum) ran. 21. 1901.

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UNITED STATES PATENT ()EFIGE.

CHARLES E. WARNER, OF WEST FITCHBURG, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO GEORGE H. CROCKER, OF FITCHBURG, MASSACHUSETTS.

SAND-TRAP.

Specification of Letters Patent.

Patented July 23, 1907.

Application filed February 27,1907- Serial No. 359,654.

To all whom it may concern:

Be it known that I, CHARLES E. WARNER, a citizen of the United States, residing at West Fitchburg, in the county of Worcester and State of-Massachusetts, have 'invented certain new and useful Improvements in Sand-Traps, of which the following is a specification.

My invention relates to improvements in what may be termed sand traps for use in the manufacture of paper.

Its objects are to provide for the elimination from the pulp during the time it is in the washing engine and as it passes to the paper-making machine of extraneous or foreign substances, as sand, pins, buttons and all other metallic and heavy substances which may attach to or 1 5 accompany the rags or other fibrous material used in the manufacture of paper, leather-board, box-board, or any article of a kindred nature; and to carry out said objects in a simple, expeditious and effective manner.

Said invention consists of certain features or instrumcntalities substantially as hereinafter fully disclosed and specifically pointed out by the claims.

In the accompanying drawing illustrating the preferred embodiment of my invention-Figure 1 is a plan view thereof.

tion of the same. Fig. 3 is a plan View, showing more particularly a screen for use in connection with, and for covering the trap, and over which the pulp or stock passes. Fig. 4 is a transverse section, and Fig. 5 is a horizontal section produced just below the top of the sand -trap.

In the disclosure of my invention, I employ the usual form of sand -trap 1, over which is placed a screen 2, suitably retained in position and, as already stated, over which passes the pulp or stock during the time it is in the washing engine and on its way to the papermaking machine, all of which are well known in this art. I employ, however, in connection with said sand-trap 1, a water-spraying pipe 3, which is ar 1'; nged in the direction of the length of said trap along one side thereof and within its plane, and is suitably connected to a source of water-supply. Said pipe is provided laterally with a longitudinal series of closely Fig. 2 is a vertical longitudinal secarranged apertures 4 adapted to deliver the water from said pipe in a spray or film intermediately of the trapbottom and the screen 2 and up through the latter to the passing pulp or stock for thinning or diluting it to a practically watery condition whereby the foreign or extraneous particles or substances aforesaid mentioned will be eliminated from said pulp or stock and allowed to gravitate to the bottom of, and be received into the trap, as will be apparent. This spraying action of the water has also the effect, naturally, to lift or buoy the thus thinned pulp or stock, and thus prevent it from settling down into the trap. Also said action of the water would be highly effective for washing the paper and rag stock, since nearly all of the wash-water may be furnished through the trap-pipe aforesaid, and which, as it flows under the stock, raising it as above noted, passes under the roll employed for the purpose, and, before the cylinder-washer has had time to remove the water, the water will have thoroughly commingled with the stock, whereby the cylinderwasher will have to take soiled water instead of clean, as would not be the case if the water were furnished or delivered from above.

This contrivance, while exceedingly simple and readily applied, is highly effective for its intended purpose of eradicating all foreign substances from the pulp or stock in its delivery to the paper-making machine.

I claim 7 0 1. A sandtrap comprising a screen-covered receptacle and a water-delivery pipe arranged therein, laterally of its longitudinal center and extending along one side thereof, and itself equipped in that side toward said longitudinal center with closely arranged spray'delivering apertures.

2. A sand -trap having extending through it, along one side thereof and within its plane, a wateupipe having a series of closely arranged apertures arranged laterally therein for throwing a spray or film of water into said trap for the purpose stated.

In testimony whereof I aflix my signature, in presence of two witnesses.

CHARLES E. WARNER.

Witnesses ALVAH CROCKER, M. FRED OCONNELL. 

